Keskustelu: Ohjelmointikysymykset: C++: Winsock & WinAPI

#include <windows.h>
#include <winsock2.h>

#define WM_SOCKET (WM_USER + 5)



LRESULT CALLBACK ViestienKasittelija( HWND hWnd,UINT viesti,
        WPARAM wParam, LPARAM lParam);
HRESULT LuoIkkuna(HINSTANCE hInstance,INT nCmdShow);
void virhe_ilmoitus(int virheid);

SOCKET alusta_winsock(HWND hWnd);


HINSTANCE hInstance;

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPInstance, \
LPSTR lpCmdLine,int nCmdShow){



 LuoIkkuna(hInstance,nCmdShow);



 MSG viesti;
 while(viesti.message != WM_QUIT){

 if( PeekMessage( &viesti,NULL, 0U,0U,PM_REMOVE) ){

     TranslateMessage( &viesti );
     DispatchMessage( &viesti );


     }else{



     }

     }


     UnregisterClass("IkkunaLuokanNimi",hInstance);


     return 0;

       }



 HRESULT LuoIkkuna(HINSTANCE hInstance,INT nCmdShow){


 HWND hWnd;

 alusta_winsock(hWnd);

 WNDCLASS ikkuna;

 ikkuna.style = CS_HREDRAW |CS_VREDRAW;
 ikkuna.lpfnWndProc = ViestienKasittelija;
 ikkuna.cbClsExtra = 0;
 ikkuna.cbWndExtra = 0;
 ikkuna.hInstance = hInstance;
 ikkuna.hIcon = LoadIcon((HINSTANCE) NULL,IDI_APPLICATION);
 ikkuna.hCursor = LoadCursor((HINSTANCE) NULL,IDC_ARROW);
 ikkuna.hbrBackground = (HBRUSH) COLOR_WINDOW;
 ikkuna.lpszMenuName = NULL;
 ikkuna.lpszClassName = "IkkunaLuokanNimi";

 if(!RegisterClass(&ikkuna))
      return false;

   hWnd = CreateWindow("IkkunaLuokanNimi",
                       "Trox Lite",
                       WS_OVERLAPPEDWINDOW,
                       CW_USEDEFAULT,
                       CW_USEDEFAULT,
                       CW_USEDEFAULT,
                       CW_USEDEFAULT,
                       (HWND) NULL,
                       (HMENU) NULL,
                       hInstance,
                       (LPVOID) NULL);

     if(!hWnd)
     return false;


     ShowWindow( hWnd,nCmdShow);
     UpdateWindow(hWnd);



      return S_OK;



         }



LRESULT CALLBACK ViestienKasittelija( HWND hWnd,UINT viesti,
        WPARAM wParam, LPARAM lParam){

    static HWND hwndYhdista;
    static HFONT hFont;

    char tdata[250];

    SOCKET Accept;

    WSAAsyncSelect(Accept,hWnd,WM_SOCKET,
          FD_READ |FD_WRITE | FD_CLOSE);

switch(viesti){

      case WM_CREATE:

           hFont = (HFONT) GetStockObject(DEFAULT_GUI_FONT);
           hwndYhdista = CreateWindowEx(NULL, "button","Aktivoi",
                          WS_CHILD | WS_VISIBLE |BS_PUSHBUTTON,10,10,100,30,
                          hWnd,(HMENU) 0,hInstance,NULL);




break;

      case WM_SOCKET:

      if(WSAGETSELECTERROR(lParam)){

      closesocket((SOCKET) wParam);
      break;

      }

      switch(WSAGETSELECTEVENT(lParam))
      {

      case FD_ACCEPT:

        Accept = accept(wParam,NULL,NULL);


      break;

      case FD_READ:

      recv(Accept,tdata,sizeof(tdata),0);


           break;

      case FD_WRITE:
           break;

       case FD_CLOSE:
            closesocket( (SOCKET)wParam);

       break;

      }

      break;

      case WM_DESTROY:



                      PostQuitMessage(0);
                      return false;

           break;


      case WM_COMMAND:


       switch (HIWORD(wParam))
			{

     case BN_CLICKED:

if ( LOWORD(wParam) == 0){
           virhe_ilmoitus(0);

           }

                      break;

}

           break;

      }



       return DefWindowProc( hWnd,viesti,wParam,lParam);

               }


void virhe_ilmoitus(int virheid){

if(virheid == 0){
MessageBeep (0);
}

     }


SOCKET alusta_winsock(HWND hWnd){
 WSADATA wsd;
 SOCKET listen_sock;
 SOCKADDR_IN InternetAddr;

 WSAStartup(MAKEWORD(2,2),&wsd);
listen_sock = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

 InternetAddr.sin_family = AF_INET;
 InternetAddr.sin_addr.s_addr = htonl(INADDR_ANY);
 InternetAddr.sin_port = htons(5150);

 bind(listen_sock,(PSOCKADDR)&InternetAddr,sizeof(InternetAddr));

 WSAAsyncSelect(listen_sock,hWnd,WM_SOCKET,FD_ACCEPT | FD_CLOSE);


listen(listen_sock,5);

return listen_sock;

          }